diff --git a/todo.md b/todo.md
index 4de4657..17e9838 100644
--- a/todo.md
+++ b/todo.md
@@ -3,15 +3,19 @@
 - better error reporting and stack traces in strict mode
 - auto-enable of strict mode depending on compiler optimizaton level
 - investigate if weak table iteration can be invalidated
-- have reactive recomputations track sources dynamically?
-  - addresses case where sources are used in if-branching guarded by another
+- have derived sources/bindings track sources dynamically?
+  - solves case where sources are used in if-branching guarded by another
     source
-  - performance implications
-- implement from solid
-  - [x] onCleanup > `cleanup()`
-  - [x] Index > `indexes()`
-  - [x] For > `values()`
-  - [x] untrack
-  - [ ] batch
-  - [ ] async/resource/loading/suspense
-  - [ ] stores
+  - significantly reduces performance
+- solution to component cleanup
+  - rely on `Instance.Destroying` event and manual destruction when cleanup is
+    needed?
+  - expand behavior of `vide.cleanup()` to detect garbage collection of
+    arbitrary values, not needing manual destruction
+- solution to nested reactivity, see: SolidJS stores
+- SolidJS control flow components
+  - Show
+  - Switch
+  - Dynamic
+  - Portal
+- batch source updates